-79.69% is the change from 847 to 172
Calculation steps:
[( 172 - 847 ) ÷ 847] x 100 = -79.69%
Formula
Percentage change = [(172 - 847) / 847] x 100
Subtract the new number by the original number
172 - 847 = -675
-675 ÷ 847 = -0.7969303423848878
-0.7969303423848878 x 100 = -79.69%